|Publication number||US4979584 A|
|Application number||US 07/357,509|
|Publication date||Dec 25, 1990|
|Filing date||May 25, 1989|
|Priority date||May 25, 1989|
|Also published as||CA2016812A1, DE69002458T2, EP0473630A1, EP0473630B1, WO1990014242A1|
|Publication number||07357509, 357509, US 4979584 A, US 4979584A, US-A-4979584, US4979584 A, US4979584A|
|Inventors||Herbert N. Charles|
|Original Assignee||Siemens-Bendix Automotive Electronics Limited|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (6), Referenced by (57), Classifications (17), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This invention relates to the ventilation of the engine bay of an automotive vehicle.
Most automobiles have the engine bay located at the front of the vehicle. Typically an internal structural cross-member bridges the front of the bay and supports the radiator that is a part of the engine's cooling system. When the vehicle is equipped with air conditioning, the condenser mounts in front of the radiator. The radiator and condenser are cooled by air that passes through them, the air either being forced through the radiator and condenser by ram air effect when the vehicle is in forward motion, and/or by being drawn through the radiator and condenser by a fan or fans located directly behind the radiator and condenser. As a result, the engine bay is ventilated by air that has been heated by the radiator and condenser. Before this air leaves the engine bay, it is further heated by the heat emitted directly by the engine. Consequently elevated temperatures can occur in the engine bay and at other locations that are exposed to the heated air leaving the engine bay. These elevated temperatures may be sufficiently high to create thermally induced problems in certain areas or components of an automotive vehicle.
The present invention relates to a new and unique arrangement for ventilating an engine bay to reduce temperatures. The invention involves the use of a ducted fan or fans to draw cooling air through the radiator and condenser and to convey the drawn air out of the engine bay so that hot effluent from the radiator and condenser does not ventilate the engine bay. The invention further involves the radiator and condenser mounting on an internal structural cross-member that bridges the front of the engine bay but with the radiator and condenser covering only a limited portion of the total open area of the cross-member. The remainder of the open area of the internal structural cross-member remains open so that ram air passes through this remaining open area to ventilate the engine bay.
While the use of ducted fans in association with the radiator of a motor vehicle is not broadly new, as evidenced by U.S. Pat. No. 4,082,344 and German OS No. 26 32 166, the prior art usage is for heating the engine bay. Moreover, the prior art does not integrate the ventilation system with an internal structural cross-member of the vehicle in the manner contemplated by the present invention. Accordingly, the invention is believed to constitute a significant development for reducing temperatures in the engine bay and at locations that are exposed to air that has ventilated the engine bay.
The foregoing features, advantages and benefits of the invention, along with additional ones, will appear in the ensuing description and claims which should be considered in conjunction with the accompanying drawings. The drawings disclose a preferred embodiment of the invention according to the best mode contemplated at the present time in carrying out the invention.
FIG. 1 is an exploded perspective view of a representative installation in accordance with principles of the invention.
FIG. 2 is a side elevational view, on an enlarged scale and partly cross-section, of FIG. 1 showing the several parts in assembled relation.
FIG. 3 is an enlarged view taken in the direction of arrows 3--3 in FIG. 1.
FIG. 4 is an enlarged view taken in the direction of arrows 4--4 in FIG. 1.
The drawing figures show a representative configuration for an automotive vehicle engine bay ventilation according to the invention. The engine bay is represented by the numeral 10 and is schematically portrayed in FIG. 1. The engine bay is bounded at the rear by a dash panel 12 and at the sides by inner fenders 14 and 16 and these are also schematically portrayed. A portion of the hood 18 is shown in FIG. 2, as is the front end 20 of the vehicle. Inside the front end 20 and forwardly of the transversely mounted engine 21 is a transverse structural cross-member 22 that joins the inner fenders 14 and 16 across the front of the bay. Cross-member 22 has an open area comprising a number of openings 24, 26, 28, 30, 32, 34, 36, 38 that pass through the cross-member from front to rear. Heat exchanger structure is disposed in front of and mounted on the structural cross-member. This heat exchanger structure comprises a radiator 40 for engine 21, and when the vehicle has air conditioning, it further comprises a condenser 42. Radiator 40 has end tanks 44, 46 at the sides and a core 48 extending between said sides. The radiator attaches to cross-member 22 at points of attachment 50. Tubes 52 and 54 project rearwardly from the end tanks 44, 46 to provide for connection to hoses leading to and from the engine. The condenser attaches to the radiator at points of attachment 56. In the assembled condition, the radiator end tanks 46, 48 fit to the vertically elongated openings 28, 30 so that the tubes 52, 54 can project rearwardly through the respective openings.
Ducted fan structure, 58 generally, comprising two ducted fans 60 is cooperatively associated with the structural cross-member 22, radiator 40 and condenser 42. Each ducted fan comprises an inlet cone 62 and a scroll 64. The ducted fans are disposed directly behind the core areas of the radiator and condenser. Each cone 62 has an inlet opening 66 that matches the corresponding openings 32 and 34 of structural cross-member 22. Furthermore, each cone has a circular outlet opening 68 that is generally centrally located with respect to the inlet opening 66. Each scroll 64 comprises a circular inlet opening 70 that fits to the circular outlet opening 68 of the corresponding inlet cone. Furthermore, each scroll has an outlet opening 72 that is disposed to the side. Each inlet cone further contains a set of three struts 74 that support a motor mount 76 centrally of each outlet opening 68. An electric motor 78 is fitted to each mount and projects rearwardly to fit inside the corresponding scroll when the parts are assembled. The motor shaft 80 points to the rear and a fan 82 is disposed within the corresponding scroll and attached to shaft 80. With this arrangement the ducted fan structure is disposed on the engine bay side of the heat exchange structure and encloses the engine bay side of the heat exchange structure.
Whenever the fans 82 are operated by energizing the motors 78, they are effective to draw air through the core areas of the condenser 42 and radiator 40 so that the air passes through the inlet cones 62 and through scrolls 64 to be discharged at the scroll outlets 72. The scroll outlets 72 convey the hot effluent out of the engine bay by the outlets either passing through the inner fender walls 14 and 16 directly or else by connecting to ducts (not shown) which exit the engine bay. When the vehicle is in forward motion, ram air is forced through the condenser, the radiator and the ducted fans to be discharged via the outlets 72 if the fans are not operating. At the same time ram air is forced through the vertically elongated openings 24, 26, and the horizontally elongated openings 36 and 38 to ventilate the engine bay. The air that passes through these openings 24, 26, 36 and 38 is not heated by the condenser or radiator, and therefore the engine bay is ventilated with ambient air, not with effluent from the condenser and radiator.
It is contemplated that the structural cross-member 22 can be fabricated by any of several conventional techniques. For example it could be a stamped metal part or it could be a moulded structural plastic part. It is also possible that the inlet cones 62 could be integrally formed with the structural cross-member. The struts 74 and motor mount 76 can also be integrally formed with the inlet cone.
Scrolls 64 are fabricated to have an upper part 84 that can be disassembled from a lower part 86. This can provide access to the fans and motors if service is necessary.
The electric motor 78 and fans 82 are conventional and the scrolls 64 are constructed in accordance with conventional fabrication techniques. The ducted fans are preferably of a type that is commonly known as a mixed flow fan.
While a preferred embodiment of the invention has been disclosed, it will be appreciated that principles are applicable to other embodiments.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3696730 *||Nov 18, 1969||Oct 10, 1972||Nissan Motor||Air cooling system of automotive engine|
|US4082344 *||Jul 9, 1976||Apr 4, 1978||British Leyland Uk Limited||Motor vehicles|
|US4114714 *||Jun 7, 1976||Sep 19, 1978||Hans List||Motor vehicle having sound-suppressing engine enclosure|
|DE2632166A1 *||Jul 16, 1976||Feb 3, 1977||British Leyland Uk Ltd||Kraftfahrzeug|
|GB1528044A *||Title not available|
|GB1555466A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US5139080 *||Dec 16, 1991||Aug 18, 1992||General Motors Corporation||Mounting assembly for an automotive condenser|
|US5219016 *||Jun 15, 1992||Jun 15, 1993||General Motors Corporation||Radiator, condenser and fan shroud assembly|
|US5271473 *||Dec 17, 1992||Dec 21, 1993||Mazda Motor Corporation||Front body structure for automotive vehicle|
|US5287940 *||Jun 28, 1993||Feb 22, 1994||Mazda Motor Corporation||Radiator support arrangement and apparatus for a vehicle|
|US5495909 *||Mar 1, 1993||Mar 5, 1996||Siemens Automotive Limited||Automotive vehicle engine bay ventilation by ducted-fan-operated ejector|
|US5588482 *||Sep 26, 1994||Dec 31, 1996||Ford Motor Company||Ducted cooling system for an automotive vehicle|
|US5626202 *||Jun 7, 1995||May 6, 1997||Itt Automotive Electrical Systems, Inc.||Push clip fastener with retention tabs|
|US5671803 *||Oct 23, 1995||Sep 30, 1997||General Motors Corporation||Modular condenser and fan shroud assembly|
|US5771961 *||Aug 3, 1995||Jun 30, 1998||Valeo Thermique Moteur||Fan module|
|US6035955 *||Apr 2, 1996||Mar 14, 2000||Toyota Jidosha Kabushiki Kaisha||Engine compartment structure of a vehicle for introducing cool intake air|
|US6073594 *||Aug 7, 1998||Jun 13, 2000||Kabushiki Kaisha Kobe Seiko Sho||Cooling apparatus for construction machine|
|US6142213 *||Nov 25, 1997||Nov 7, 2000||Siemens Canada Limited||Ducted cooling system with radial-flow fan|
|US6205638||Oct 23, 1998||Mar 27, 2001||Decoma International Inc.||End module assembly for installation on a vehicle and method for making the same|
|US6491502||Dec 5, 2000||Dec 10, 2002||Siemens Canada Limited||Center mounted fan module with even airflow distribution features|
|US6729681||Dec 19, 2000||May 4, 2004||Decoma International Inc.||End module assembly for installation on a vehicle|
|US6755157||Oct 30, 2000||Jun 29, 2004||Robert Bosch Corporation||Mount for connecting automotive fan motor to housing|
|US6832644 *||Sep 20, 2001||Dec 21, 2004||Siemens Vdo Automotive Inc.||Cooling module with air dams|
|US6871697 *||Apr 15, 2002||Mar 29, 2005||Clark Equipment Company||Integrated fluid reservoir and heat exchanger ducts|
|US6883589 *||Sep 26, 2001||Apr 26, 2005||Denso Corporation||Front end structure|
|US7121368 *||Apr 14, 2003||Oct 17, 2006||Mackelvie Winston||Bi-directional automotive cooling fan|
|US7318394||Jun 25, 2004||Jan 15, 2008||Robert Bosch Llc||Mount for connecting automotive fan motor to housing|
|US7537072||Oct 31, 2007||May 26, 2009||Enviro-Cool, Inc.||Air management system for heavy duty truck under-hood heat control|
|US7703566 *||May 19, 2006||Apr 27, 2010||Gm Global Technology Operations, Inc.||Integrated automotive tie bar and upper condenser, radiator and fan module brackets|
|US7886860 *||Jul 29, 2006||Feb 15, 2011||Behr Gmbh & Co. Kg||Assembly support system|
|US7987938 *||Mar 26, 2008||Aug 2, 2011||Honda Motor Co., Ltd.||Cooling device for motorcycle engine|
|US8015954 *||Apr 18, 2007||Sep 13, 2011||Scania Cv Ab (Publ)||Cooling fan arrangement at a vehicle|
|US8122990 *||Sep 23, 2009||Feb 28, 2012||Honda Motor Co., Ltd.||Radiator mounting structure for motorcycle|
|US8291721 *||Feb 24, 2009||Oct 23, 2012||Carrier Corporation||Dual condenser fans with center partition|
|US8453777 *||Oct 24, 2011||Jun 4, 2013||Deere & Company||Cooling fan duct assembly|
|US8556013||Apr 21, 2009||Oct 15, 2013||Enviro-Cool, Inc.||Air management system for heavy duty truck under-hood heat control|
|US8905123||Aug 9, 2011||Dec 9, 2014||Toyota Motor Engineering & Manufacturing North America, Inc.||Radiator fan control for heat pump HVAC|
|US8910705||May 27, 2008||Dec 16, 2014||Toyota Motor Engineering & Manufacturing North America, Inc.||Radiator fan control for heat pump HVAC|
|US8936122 *||Jun 29, 2012||Jan 20, 2015||Macdon Industries Ltd.||Windrower tractor with parallel heat exchangers for cooling of engine and associated fluids|
|US8960136||May 16, 2013||Feb 24, 2015||Spartan Motors, Inc.||Method and apparatus for managing airflow and powertrain cooling|
|US8967307 *||Jun 7, 2012||Mar 3, 2015||Hyundai Motor Company||Cooling apparatus for vehicle|
|US20020007933 *||May 15, 2001||Jan 24, 2002||Karl-Heinz Baumann||Heat exchanger arrangement on a front carrying structure of a motor vehicle|
|US20030136544 *||Apr 15, 2002||Jul 24, 2003||Albright Larry E.||Integrated fluid reservoir and heat exchanger ducts|
|US20030183433 *||Apr 14, 2003||Oct 2, 2003||Mackelvie Winston||Bi-directional automotive cooling fan|
|US20040255878 *||Jun 25, 2004||Dec 23, 2004||Robert Bosch Corporation, A Massachusetts Corporation||Mount for connecting automotive fan motor to housing|
|US20070267236 *||May 19, 2006||Nov 22, 2007||Gm Global Technology Operations, Inc.||Integrated Automotive Tie Bar and Upper Condenser, Radiator and Fan Module Brackets|
|US20080035400 *||Aug 8, 2006||Feb 14, 2008||Paccar Inc||Airflow diverter|
|US20080099261 *||Oct 31, 2007||May 1, 2008||Enviro-Cool, Inc.||Air management system for heavy duty truck under-hood heat control|
|US20080236783 *||Mar 26, 2008||Oct 2, 2008||Kenji Morita||Cooling device for motorcycle engine|
|US20090114366 *||Mar 23, 2007||May 7, 2009||Calsonic Kansei Corporation||Heat exchanger for vehicle|
|US20090159021 *||Apr 18, 2007||Jun 25, 2009||Zoltan Kardos||Cooling fan arrangement at a vehicle|
|US20090211286 *||Feb 24, 2009||Aug 27, 2009||Carrier Corporation||Dual condenser fans with center partition|
|US20100058795 *||Jul 30, 2009||Mar 11, 2010||Eric Allen Schmitter||Automotive dash board mounted evaporative cooling system|
|US20100078242 *||Apr 1, 2010||Honda Motor Co., Ltd.||Radiator mounting structure for motorcycle|
|US20100301638 *||Mar 5, 2010||Dec 2, 2010||Hinshaw Eric J||Integrated Air Intake System|
|US20130111926 *||May 9, 2013||Hyundai Motor Company||Cooling apparatus for vehicle|
|US20130319778 *||Jun 29, 2012||Dec 5, 2013||Don MacGregor||Windrower Tractor with Parallel Heat Exchangers for Cooling of Engine and Associated Fluids|
|DE102010038350A1 *||Jul 23, 2010||Feb 16, 2012||Bayerische Motoren Werke Aktiengesellschaft||Cooling air guide assembly for motor vehicle i.e. motor car, has frame including frame component that is associated with air guide member for guiding air flow through cooler, where frame is made of metal|
|EP0855304A1 *||Jan 15, 1998||Jul 29, 1998||Bayerische Motoren Werke Aktiengesellschaft||Cooling module|
|EP1387053A1 *||Jul 3, 2003||Feb 4, 2004||ebm Werke GmbH & Co. KG||Fan arrangement for cooling of motor vehicle engines|
|WO1992012023A1 *||Jan 3, 1992||Jul 23, 1992||Siemens Ag||Automotive vehicle engine bay ventilation by ducted-fan-operated ejector|
|WO2001033053A2 *||Oct 27, 2000||May 10, 2001||Black William Murray||Housing mount for connecting automotive fan motor|
|WO2007076973A1 *||Dec 22, 2006||Jul 12, 2007||Behr Gmbh & Co Kg||Fan arrangement in a motor vehicle|
|U.S. Classification||180/68.1, 165/121, 180/68.4|
|International Classification||B60K11/08, F01P5/06, F01P11/10, B60K11/04, F01P5/02|
|Cooperative Classification||B60K11/08, F01P5/06, B60K11/04, F01P11/10, F01P2005/025|
|European Classification||B60K11/04, F01P11/10, F01P5/06, B60K11/08|
|May 25, 1989||AS||Assignment|
Owner name: SIEMENS-BENDIX AUTOMOTIVE ELECTRONICS LIMITED
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CHARLES, HERBERT N.;REEL/FRAME:005079/0388
Effective date: 19890518
|May 24, 1994||FPAY||Fee payment|
Year of fee payment: 4
|May 20, 1998||FPAY||Fee payment|
Year of fee payment: 8
|May 16, 2002||FPAY||Fee payment|
Year of fee payment: 12